Beamforming measurements based on pss/sss

ABSTRACT

Beamforming measurement techniques based on PSS/SSS are disclosed. An apparatus of a user equipment (UE) can include processing circuitry configured to decode a configuration message from a source serving cell, the configuration message indicating signal selection criteria for cell measurement reporting. A synchronization signal (SS) burst set associated with one or more transmission/reception points (TRPs) within a neighboring cell is decoded, the SS burst set including a plurality of SS blocks. A cell beamforming measurement signal associated with the neighboring cell is generated, based on signal measurements of the SS blocks and the signal selection criteria. A radio resource management (RRM) measurement report message is encoded for transmission to the serving cell, the measurement report message including the cell beamforming measurement signal. A handover command message for initiating a handover to the neighboring cell is decoded, the handover command based on the cell beamforming measurement signal.

PRIORITY CLAIM

This application claims the benefit of priority to U.S. ProvisionalPatent Application Ser. No. 62/436,911, filed Dec. 20, 2016, andentitled “MEASUREMENT BASED ON PSS/SSS ONLY PER CELL,” which provisionalapplication is incorporated herein by reference in its entirety.

TECHNICAL FIELD

Aspects pertain to wireless communications. Some aspects relate towireless networks including 3GPP (Third Generation Partnership Project)networks, 3GPP LTE (Long Term Evolution) networks, 3GPP LTE-A (LTEAdvanced) networks, and fifth-generation (5G) networks including newradio (NR) networks. Other aspects are directed to using beamformingmeasurements based on new radio synchronization signals (NRSSs),including primary synchronization signals (PSSs) and secondarysynchronization signals (SSSs).

BACKGROUND

Mobile communication has evolved significantly from early voice systemsto today's highly sophisticated integrated communication platform. Withthe increase in different types of devices communicating with variousnetwork devices, usage of 3GPP LTE systems has increased. Thepenetration of mobile devices (user equipment or UEs) in modern societyhas continued to drive demand for a wide variety of networked devices ina number of disparate environments. The use of networked UEs using 3GPPLTE systems has increased in all areas of home and work life. Fifthgeneration (5G) wireless systems are forthcoming, and are expected toenable even greater speed, connectivity, and usability.

Next generation 5G networks are expected to increase throughput,coverage, and robustness. As current cellular network frequency issaturated, high frequency, such as millimeter wave (mmWave) is anattractive choice due to its high bandwidth. However, due to the highpath loss, beamforming both at the network and at the user equipment(UE) can be used to increase antenna gain and to compensate reducedsignal propagation associated with high frequency communications. Whenboth the network and the UE are beamforming, there can be manychallenges, including discovery and measurement to assist withbeamforming.

BRIEF DESCRIPTION OF THE FIGURES

In the figures, which are not necessarily drawn to scale, like numeralsmay describe similar components in different views. Like numerals havingdifferent letter suffixes may represent different instances of similarcomponents. The figures illustrate generally, by way of example, but notby way of limitation, various aspects discussed in the present document.

FIG. 1A illustrates an architecture of a network in accordance with someaspects.

FIG. 1B is a simplified diagram of a next generation wireless network inaccordance with some aspects.

FIG. 2 illustrates example components of a device 200 in accordance withsome aspects.

FIG. 3 illustrates example interfaces of baseband circuitry inaccordance with some aspects.

FIG. 4 is an illustration of a control plane protocol stack inaccordance with some aspects.

FIG. 5 is an illustration of a user plane protocol stack in accordancewith some aspects.

FIG. 6 is a block diagram illustrating components, according to someexample aspects, able to read instructions from a machine-readable orcomputer-readable medium (e.g., a non-transitory machine-readablestorage medium) and perform any one or more of the methodologiesdiscussed herein.

FIG. 7 illustrates examples of multiple beam transmissions in accordancewith some aspects.

FIG. 8 illustrates a UE performing beamforming measurements inaccordance with some aspects.

FIG. 9 illustrates SS burst set measurements at a first time T1 inaccordance with some aspects.

FIG. 10 illustrates SS burst set measurements at a second time T2 inaccordance with some aspects.

FIG. 11 illustrates an example communication sequence for performing ahandover procedure in accordance with some aspects.

FIG. 12 illustrates example filtering circuitry which can be used by aUE to filter SS blocks received within a SS burst set in accordance withsome aspects.

FIG. 13 illustrates various example scenarios with different measurementand data coverage associated with a cell in accordance with someaspects.

FIG. 14 is a flow diagram illustrating example functionalities forperforming beamforming measurements in accordance with some aspects.

FIG. 15 illustrates a block diagram of a communication device such as anevolved Node-B (eNB), a new generation Node-B (gNB), an access point(AP), a wireless station (STA), or a user equipment (UE), in accordancewith some aspects.

DETAILED DESCRIPTION

The following description and the drawings sufficiently illustratespecific aspects to enable those skilled in the art to practice them.Other aspects may incorporate structural, logical, electrical, process,and other changes. Portions and features of some aspects may be includedin, or substituted for, those of other aspects. Aspects set forth in theclaims encompass all available equivalents of those claims.

Any of the radio links described herein may operate according to any oneor more of the following radio communication technologies and/orstandards including but not limited to: a Global System for MobileCommunications (GSM) radio communication technology, a General PacketRadio Service (GPRS) radio communication technology, an Enhanced DataRates for GSM Evolution (EDGE) radio communication technology, and/or aThird Generation Partnership Project (3GPP) radio communicationtechnology, for example Universal Mobile Telecommunications System(UMTS), Freedom of Multimedia Access (FOMA), 3GPP Long Term Evolution(LTE), 3GPP Long Term Evolution Advanced (LTE Advanced), Code divisionmultiple access 2000 (CDMA2000), Cellular Digital Packet Data (CDPD),Mobitex, Third Generation (3G), Circuit Switched Data (CSD), High-SpeedCircuit-Switched Data (HSCSD), Universal Mobile TelecommunicationsSystem (Third Generation) (UMTS (3G)), Wideband Code Division MultipleAccess (Universal Mobile Telecommunications System) (W-CDMA (UMTS)),High Speed Packet Access (HSPA), High-Speed Downlink Packet Access(HSDPA). High-Speed Uplink Packet Access (HSUPA), High Speed PacketAccess Plus (HSPA+), Universal Mobile TelecommunicationsSystem-Time-Division Duplex (UMTS-TDD), Time Division-Code DivisionMultiple Access (TD-CDMA), Time Division-Synchronous Code DivisionMultiple Access (TD-CDMA), 3rd Generation Partnership Project Release 8(Pre-4th Generation) (3GPP Rel. 8 (Pre-4G)), 3GPP Rel. 9 (3rd GenerationPartnership Project Release 9), 3GPP Rel. 10 (3rd Generation PartnershipProject Release 10), 3GPP Rel. 11 (3rd Generation Partnership ProjectRelease 11), 3GPP Rel. 12 (3rd Generation Partnership Project Release12), 3GPP Rel. 13 (3rd Generation Partnership Project Release 13), 3GPPRel. 14 (3rd Generation Partnership Project Release 14), 3GPP Rel. 15(3rd Generation Partnership Project Release 15), 3GPP Rel. 16 (3rdGeneration Partnership Project Release 16), 3GPP Rel. 17 (3rd GenerationPartnership Project Release 17), 3GPP Rel. 18 (3rd GenerationPartnership Project Release 18), 3GPP 5G, 3GPP LTE Extra, LTE-AdvancedPro, LTE Licensed-Assisted Access (LAA), MuLTEfire, UMTS TerrestrialRadio Access (UTRA), Evolved UMTS Terrestrial Radio Access (E-UTRA),Long Term Evolution Advanced (4th Generation) (LTE Advanced (4G)),cdmaOne (2G), Code division multiple access 2000 (Third generation)(CDMA2000 (3G)), Evolution-Data Optimized or Evolution-Data Only(EV-DO), Advanced Mobile Phone System (1st Generation) (AMPS (1G)),Total Access Communication System/Extended Total Access CommunicationSystem (TACS/ETACS), Digital AMPS (2nd Generation) (D-AMPS (2G)),Push-to-talk (PTT), Mobile Telephone System (MTS), Improved MobileTelephone System (IMTS), Advanced Mobile Telephone System (AMTS), OLT(Norwegian for Offentlig Landmobil Telefoni, Public Land MobileTelephony), MTD (Swedish abbreviation for Mobiltelefonisystem D, orMobile telephony system D), Public Automated Land Mobile (Autotel/PALM),ARP (Finnish for Autoradiopuhelin, “car radio phone”), NMT (NordicMobile Telephony), High capacity version of NTT (Nippon Telegraph andTelephone) (Hicap), Cellular Digital Packet Data (CDPD), Mobitex,DataTAC, Integrated Digital Enhanced Network (iDEN), Personal DigitalCellular (PDC), Circuit Switched Data (CSD), Personal Handy-phone System(PHS), Wideband Integrated Digital Enhanced Network (WiDEN), iBurst,Unlicensed Mobile Access (UMA), also referred to as also referred to as3GPP Generic Access Network, or GAN standard), Zigbee, Bluetooth(r),Wireless Gigabit Alliance (WiGig) standard, mmWave standards in general(wireless systems operating at 10-300 GHz and above such as WiGig, IEEE802.11ad, IEEE 802.11ay, etc.), technologies operating above 300 GHz andTHz bands, (3GPP/LTE based or IEEE 802.11p and other) Vehicle-to-Vehicle(V2V) and Vehicle-to-X (V2X) and Vehicle-to-Infrastructure (V2I) andInfrastructure-to-Vehicle (I2V) communication technologies, 3GPPcellular V2X, DSRC (Dedicated Short Range Communications) communicationsystems such as Intelligent-Transport-Systems and others, etc.

Aspects described herein can be used in the context of any spectrummanagement scheme including dedicated licensed spectrum, unlicensedspectrum, (licensed) shared spectrum (such as LSA=Licensed Shared Accessin 2.3-2.4 GHz, 3.4-3.6 GHz, 3.6-3.8 GHz and further frequencies andSAS=Spectrum Access System in 3.55-3.7 GHz and further frequencies).Applicable spectrum bands include IMT (International MobileTelecommunications) spectrum (including 450-470 MHz, 790-960 MHz,1710-2025 MHz, 2110-2200 MHz, 2300-2400 MHz, 2500-2690 MHz, 698-790 MHz,610-790 MHz, 3400-3600 MHz, etc). Note that some bands are limited tospecific region(s) and/or countries), IMT-advanced spectrum, IMT-2020spectrum (expected to include 3600-3800 MHz, 3.5 GHz bands, 700 MHzbands, bands within the 24.25-86 GHz range, etc.), spectrum madeavailable under FCC's “Spectrum Frontier” 5G initiative (including27.5-28.35 GHz, 29.1-29.25 GHz, 31-31.3 GHz, 37-38.6 GHz, 38.6-40 GHz,42-42.5 GHz, 57-64 GHz, 71-76 GHz, 81-86 GHz and 92-94 GHz, etc), theITS (Intelligent Transport Systems) band of 5.9 GHz (typically5.85-5.925 GHz) and 63-64 GHz, bands currently allocated to WiGig suchas WiGig Band 1 (57.24-59.40 GHz), WiGig Band 2 (59.40-61.56 GHz) andWiGig Band 3 (61.56-63.72 GHz) and WiGig Band 4 (63.72-65.88 GHz), the70.2 GHz-71 GHz band, any band between 65.88 GHz and 71 GHz, bandscurrently allocated to automotive radar applications such as 76-81 GHz,and future bands including 94-300 GHz and above. Furthermore, the schemecan be used on a secondary basis on bands such as the TV White Spacebands (typically below 790 MHz) where in particular the 400 MHz and 700MHz bands are promising candidates. Besides cellular applications,specific applications for vertical markets may be addressed such as PMSE(Program Making and Special Events), medical, health, surgery,automotive, low-latency, drones, etc. applications.

Aspects described herein can also be applied to different Single Carrieror OFDM flavors (CP-OFDM, SC-FDMA, SC-OFDM, filter bank-basedmulticarrier (FBMC), OFDMA, etc.) and in particular 3GPP NR (New Radio)by allocating the OFDM carrier data bit vectors to the correspondingsymbol resources.

FIG. 1A illustrates an architecture of a network in accordance with someaspects. The network 100 is shown to include a user equipment (UE) 101and a UE 102. The UEs 101 and 102 are illustrated as smartphones (e.g.,handheld touchscreen mobile computing devices connectable to one or morecellular networks), but may also comprise any mobile or non-mobilecomputing device, such as Personal Data Assistants (PDAs), pagers,laptop computers, desktop computers, wireless handsets, or to anycomputing device including a wireless communications interface.

In some aspects, any of the UEs 101 and 102 can comprise an Internet ofThings (IoT) UE, which can comprise a network access layer designed forlow-power IoT applications utilizing short-lived UE connections. An IoTUE can utilize technologies such as machine-to-machine (M2M) ormachine-type communications (MTC) for exchanging data with an MTC serveror device via a public land mobile network (PLMN). Proximity-BasedService (ProSe) or device-to-device (D2D) communication, sensornetworks, or IoT networks. The M2M or MTC exchange of data may be amachine-initiated exchange of data. An IoT network describesinterconnecting IoT UEs, which may include uniquely identifiableembedded computing devices (within the Internet infrastructure), withshort-lived connections. The IoT UEs may execute background applications(e.g., keep-alive messages, status updates, etc.) to facilitate theconnections of the IoT network.

The UEs 101 and 102 may be configured to connect, e.g., communicativelycouple, with a radio access network (RAN) 110—the RAN 110 may be, forexample, an Evolved Universal Mobile Telecommunications System (UMTS)Terrestrial Radio Access Network (E-UTRAN), a NextGen RAN (NG RAN), orsome other of RAN. The UEs 101 and 102 utilize connections 103 and 104,respectively, each of which comprises a physical communicationsinterface or layer (discussed in further detail below); in this example,the connections 103 and 104 are illustrated as an air interface toenable communicative coupling, and can be consistent with cellularcommunications protocols, such as a Global System for MobileCommunications (GSM) protocol, a code-division multiple access (CDMA)network protocol, a Push-to-Talk (PTT) protocol, a PTT over Cellular(POC) protocol, a Universal Mobile Telecommunications System (UMTS)protocol, a 3GPP Long Term Evolution (LTE) protocol, a fifth generation(5G) protocol, a New Radio (NR) protocol, and the like.

In some aspects, RAN 110 can include NG RAN or NG Core RAN. The NG RAN110 can include various functions, such as an access and mobilitymanagement function (AMF), a session management function (SMF), a userplane function (UPF), a policy control function (PCF), a unified datamanagement (UDM) function, and a network function (NF) repositoryfunction (NRF). The AMF can be used to manage access control andmobility, and can also include network slice selection functionality.The SMF can be configured to set up and manage various sessionsaccording to a network policy. The UPF can be deployed in one or moreconfigurations according to a desired service type. The PCF can beconfigured to provide a policy framework using network slicing, mobilitymanagement, and roaming (similar to PCRF in a 4G communication system).The UDM can be configured to store subscriber profiles and data (similarto an HSS in a 4G communication system).

In an aspect, the UEs 101 and 102 may further directly exchangecommunication data via a ProSe interface 105. The ProSe interface 105may alternatively be referred to as a sidelink interface comprising oneor more logical channels, including but not limited to a PhysicalSidelink Control Channel (PSCCH), a Physical Sidelink Shared Channel(PSSCH), a Physical Sidelink Discovery Channel (PSDCH), and a PhysicalSidelink Broadcast Channel (PSBCH).

The UE 102 is shown to he configured to access an access point (AP) 106via connection 107. The connection 107 can comprise a local wirelessconnection, such as a connection consistent with any IEEE 802.11protocol, wherein the AP 106 would comprise a wireless fidelity (WiFi®)router. In this example, the AP 106 is shown to be connected to theInternet without connecting to the core network of the wireless system(described in further detail below).

The RAN 110 can include one or more access nodes that enable theconnections 103 and 104. These access nodes (ANs) can be referred to asbase stations (BSs), NodeBs, evolved NodeBs (eNBs), next GenerationNodeBs (gNBs), RAN nodes, and so forth, and can comprise ground stations(e.g., terrestrial access points) or satellite stations providingcoverage within a geographic area (e.g., a cell). In some aspects, thecommunication nodes 111 and 112 can be transmission/reception points(TRPs). In instances when the communication nodes 111 and 112 are NodeBs(e.g., eNBs or gNBs), one or more TRPs can function within thecommunication cell of the NodeBs. The RAN 110 may include one or moreRAN nodes for providing macrocells, e.g., macro RAN node 111, and one ormore RAN nodes for providing femtocells or picocells (e.g., cells havingsmaller coverage areas, smaller user capacity, or higher bandwidthcompared to macrocells), e.g., low power (LP) RAN node 112.

Any of the RAN nodes 111 and 112 can terminate the air interfaceprotocol and can be the first point of contact for the UEs 101 and 102.In some aspects, any of the RAN nodes 111 and 112 can fulfill variouslogical functions for the RAN 110 including, but not limited to, radionetwork controller (RNC) functions such as radio bearer management,uplink and downlink dynamic radio resource management and data packetscheduling, and mobility management. In an example, any of the nodes 111and/or 112 can be a new generation node-B (gNB), an evolved node-B (eNB)or another type of RAN node.

In accordance with some aspects, the UEs 101 and 102 can be configuredto communicate using Orthogonal Frequency-Division Multiplexing (OFDM)communication signals with each other or with any of the RAN nodes 111and 112 over a multicarrier communication channel in accordance variouscommunication techniques, such as, but not limited to, an OrthogonalFrequency-Division Multiple Access (OFDMA) communication technique(e.g., for downlink communications) or a Single Carrier FrequencyDivision Multiple Access (SC-FDMA) communication technique (e.g., foruplink and ProSe or sidelink communications), although the scope of theaspects is not limited in this respect. The OFDM signals can comprise aplurality of orthogonal subcarriers.

In some aspects, a downlink resource grid can be used for downlinktransmissions from any of the RAN nodes 111 and 112 to the UEs 101 and102, while uplink transmissions can utilize similar techniques. The gridcan be a time-frequency grid, called a resource grid or time-frequencyresource grid, which is the physical resource in the downlink in eachslot. Such a time-frequency plane representation is a common to practicefor OFDM systems, which makes it intuitive for radio resourceallocation. Each column and each row of the resource grid corresponds toone OFDM symbol and one OFDM subcarrier, respectively. The duration ofthe resource grid in the time domain corresponds to one slot in a radioframe. The smallest time-frequency unit in a resource grid is denoted asa resource element. Each resource grid comprises a number of resourceblocks, which describe the mapping of certain physical channels toresource elements. Each resource block comprises a collection ofresource elements; in the frequency domain, this may represent thesmallest quantity of resources that currently can be allocated. Thereare several different physical downlink channels that are conveyed usingsuch resource blocks.

The physical downlink shared channel (PDSCH) may carry user data andhigher-layer signaling to the UEs 101 and 102. The physical downlinkcontrol channel (PDCCH) may carry information about the transport formatand resource allocations related to the PDSCH channel, among otherthings. It may also inform the UEs 101 and 102 about the transportformat, resource allocation, and H-ARQ (Hybrid Automatic Repeat Request)information related to the uplink shared channel. Typically, downlinkscheduling (assigning control and shared channel resource blocks to theUE 102 within a cell) may be performed at any of the RAN nodes 111 and112 based on channel quality information fed back from any of the UEs101 and 102. The downlink resource assignment information may be sent onthe PDCCH used for (e.g., assigned to) each of the UEs 101 and 102.

The PDCCH may use control channel elements (CCEs) to convey the controlinformation. Before being mapped to resource elements, the PDCCHcomplex-valued symbols may first be organized into quadruplets, whichmay then be permuted using a sub-block interleaver for rate matching.Each PDCCH may be transmitted using one or more of these CCEs, whereeach CCE may correspond to nine sets of four physical resource elementsknown as resource element groups (REGs). Four Quadrature Phase ShiftKeying (QPSK) symbols may be mapped to each REG. The PDCCH can betransmitted using one or more CCEs, depending on the size of thedownlink control information (DCI) and the channel condition. There canbe four or more different PDCCH formats defined in LTE with differentnumbers of CCEs (e.g., aggregation level, L=1, 2, 4, or 8).

Some aspects may use concepts for resource allocation for is controlchannel information that are an extension of the above-describedconcepts. For example, some aspects may utilize an enhanced physicaldownlink control channel (EPDCCH) that uses PDSCH resources for controlinformation transmission. The EPDCCH may be transmitted using one ormore enhanced the control channel elements (ECCEs). Similar to above,each ECCE may correspond to nine sets of four physical resource elementsknown as an enhanced resource element groups (EREGs). An ECCE may haveother numbers of EREGs in some situations.

The RAN 110 is shown to be communicatively coupled to a core network(CN) 120 via an S1 interface 113. In aspects, the CN 120 may be anevolved packet core (EPC) network, a NextGen Packet Core (NPC) network,or some other type of CN. In this aspect the S1 interface 113 is splitinto two parts: the S1-U interface 114, which carries traffic databetween the RAN nodes 111 and 112 and the serving gateway (S-GW) 122,and the S1-mobility management entity (MME) interface 115, which is asignaling interface between the RAN nodes 111 and 112 and MMEs 121.

In this aspect, the CN 120 comprises the MMEs 121, the S-GW 122, thePacket Data Network (PDN) Gateway (P-GW) 123, and a home subscriberserver (HSS) 124. The MMEs 121 may be similar in function to the controlplane of legacy Serving General Packet Radio Service (GPRS) SupportNodes (SGSN). The MMEs 121 may manage mobility aspects in access such asgateway selection and tracking area list management. The HSS 124 maycomprise a database for network users, including subscription-relatedinformation to support the network entities' handling of communicationsessions. The CN 120 may comprise one or several HSSs 124, depending onthe number of mobile subscribers, on the capacity of the equipment, onthe organization of the network, etc. For example, the HSS 124 canprovide support for routing/roaming, authentication, authorization,naming/addressing resolution, location dependencies, etc.

The S-GW 122 may terminate the S1 interface 113 towards the RAN 110, androutes data packets between the RAN 110 and the CN 120. In addition, theS-GW 122 may be a local mobility anchor point for inter-RAN nodehandovers and also may provide an anchor for inter-3GPP mobility. Otherresponsibilities may include lawful intercept, charging, and some policyenforcement.

The P-GW 123 may terminate a SGi interface toward a PDN. The P-GW 123may route data packets between the EPC network 123 and external networkssuch as a network including the application server 130 (alternativelyreferred to as application function (AF)) via an Internet Protocol (IP)interface 125. Generally, the application server 130 may be an elementoffering applications that use IP bearer resources with the core network(e.g., UMTS Packet Services (PS) domain, LTE PS data services, etc.). Inthis aspect, the P-GW 123 is shown to be communicatively coupled to anapplication server 130 via an IP communications interface 125. Theapplication server 130 can also be configured to support one or morecommunication services (e.g., Voice-over-Internet Protocol (VoIP)sessions, PTT sessions, group communication sessions, social networkingservices, etc.) for the UEs 101 and 102 via the CN 120.

The P-GW 123 may further be a node for policy enforcement and chargingdata collection. Policy and Charging Enforcement Function (PCRF) 126 isthe policy and charging control element of the CN 120. In a non-roamingscenario, there may be a single PCRF in the Home Public Land MobileNetwork (HPLMN) associated with a UE's Internet Protocol ConnectivityAccess Network (IP-CAN) session. In a roaming scenario with localbreakout of traffic, there may be two PCRFs associated with a UE'sIP-CAN session: a Home PCRF (H-PCRF) within a HPLMN and a Visited PCRF(V-PCRF) within a Visited Public Land Mobile Network (VPLMN). The PCRF126 may be communicatively coupled to the application server 130 via theP-GW 123. The application server 130 may signal the PCRF 126 to indicatea new service flow and select the appropriate Quality of Service (QoS)and charging parameters. The PCRF 126 may provision this rule into aPolicy and Charging Enforcement Function (PCEF) (not shown) with theappropriate traffic flow template (TFT) and QoS class of identifier(QCI), which commences the QoS and charging as specified by theapplication server 130.

In an example, any of the nodes 111 or 112 can be configured tocommunicate to the UEs 101/102 (e.g., dynamically) an antenna panelselection and a receive (Rx) beam selection that should be used by theUE for data reception on a physical downlink shared channel (PDSCH) aswell as for channel state information reference signal (CSI-RS)measurements and channel state information (CSI) calculation.

In an example, any of the nodes 111 or 112 can be configured tocommunicate to the UEs 101/102 (e.g., dynamically) an antenna panelselection and a transmit (Tx) beam selection that should be used by theUE for data transmission on a physical uplink shared channel (PUSCH) aswell as for sounding reference signal (SRS) transmission.

In some aspects, LTE-based communications can use a fixed transmissiontime interval (TTI) length of 1 ms with 12-14 symbols, or a smaller TTIcan also be used (e.g., in NR-based communications). The transmission ofa request, grant, or data can be achieved by using one or more subframeswith a TTI. In this regard, the TTI length can impact both the time fortransmitting over the air as well as the processing time at transmittersand receivers.

In accordance with some techniques and aspects described herein, radioresource management (RRM) beamforming measurements can be based on oneor more reference signals received within a cell. For example, one ormore of a primary synchronization signal (PSS), a secondarysynchronization signal (SSS), and a new radio synchronization signal(NRSS) can be used in connection with cell beamforming measurements andcell reporting. In some aspects, the synchronization signals used forcell reporting and beamforming can be transmitted over a communicationbeam that is wider than a communication beam used for a data channel. Insome aspects, the synchronization signals can be broadcast via SFN. Inin some aspects as described herein, the synchronization signals can betransmitted in a synchronization signal (SS) burst set (e.g., 190),which can be communicated periodically to the UE (e.g., 102). In someaspects, the synchronization signals within the SS burst set can includecell ID information. In response to the SS burst set 190, the UE canperform various signal measurements and include a cell beamformingmeasurements signal (and/or one or more beam reporting signals) within ameasurement report 192 communicated back to the RAN 110. Furtherdescription of various techniques to generate beamforming measurementsusing synchronization signals within an SS burst or described hereinbelow in reference to FIGS. 7-15.

FIG. 1B is a simplified diagram of a next generation wireless network inaccordance with some aspects. The wireless network may be similar tothat shown in FIG. 1A but may contain components associated with a 5Gnetwork. The wireless network may contain, among other elements notshown, a RAN 110 coupled to the core network 120 (as well as to theInternet which can connect the core network 120 with other core networks120). In some aspects, the RAN 110 and the core network 120 may be anext generation (5G) 3GPP RAN and 5G core network, respectively. The RAN110 may include an upper layer of a new generation node-B (gNB) (alsoreferred to as a new radio (NR) base station (BS) (ULNRBS)) 140 andmultiple lower layers of different gNBs (NR BS (LLNRBS)) 111. TheLLNRBSs 111 can be connected to the ULNRBS 140 via a Z interface. The Zinterface can be open or proprietary. In some examples, the LLNRBS 111can be referred to as a transmission-reception point (TRP). If the Zinterface is proprietary, then the ULNRBS 140 and the LLNRBS 111 may beprovided by the same vendor. The LLNRBS 111 can be connected by a Yinterface, which may be equivalent to the LTE X2 interface. The ULNRBS140 may be connected to the core network 120 through the S1 interface113.

As used herein, the term circuitry may refer to, be part of, or includean Application Specific Integrated Circuit (ASIC), an electroniccircuit, a processor (shared, dedicated, or group), or memory (shared,dedicated, or group) that executes one or more software or firmwareprograms, a combinational logic circuit, or other suitable hardwarecomponents that provide the described functionality. In some aspects,the circuitry may be implemented in, or functions associated with thecircuitry may be implemented by, one or more software or firmwaremodules. In some aspects, circuitry may include logic, at leastpartially operable in hardware. Aspects described herein may beimplemented into a system using any suitably configured hardware orsoftware.

FIG. 2 illustrates example components of a device 200 in accordance withsome aspects. In some aspects, the device 200 may include applicationcircuitry 202, baseband circuitry 204, Radio Frequency (RF) circuitry206, front-end module (FEM) circuitry 208, one or more antennas 210, andpower management circuitry (PMC) 212 coupled together at least as shown.The components of the illustrated device 200 may be included in a UE ora RAN node. In some aspects, the device 200 may include less elements(e.g., a RAN node may not utilize application circuitry 202, and insteadinclude a processor/controller to process IP data received from an EPC).In some aspects, the device 200 may include additional elements such as,for example, memory/storage, display, camera, sensor, or input/output(I/O) interface. In other aspects, the components described below may beincluded in more than one device (e.g., said circuitries may beseparately included in more than one device for Cloud-RAN (C-RAN)implementations).

The application circuitry 202 may include one or more applicationprocessors. For example, the application circuitry 202 may includecircuitry such as, but not limited to, one or more single-core ormulti-core processors. The processor(s) may include any combination ofgeneral-purpose processors and dedicated processors (e.g., graphicsprocessors, application processors, etc.). The processors may be coupledwith or may include memory/storage and may be configured to executeinstructions stored in the memory/storage to enable various applicationsor operating systems to run on the device 200. In some aspects,processors of application circuitry 202 may process IP data packetsreceived from an EPC.

The baseband circuitry 204 may include circuitry such as, but notlimited to, one or more single-core or multi-core processors. Thebaseband circuitry 204 may include one or more baseband processors orcontrol logic to process baseband signals received from a receive signalpath of the RF circuitry 206 and to generate baseband signals for atransmit signal path of the RF circuitry 206. Baseband processingcircuitry 204 may interface with the application circuitry 202 forgeneration and processing of the baseband signals and for controllingoperations of the RF circuitry 206. For example, in some aspects, thebaseband circuitry 204 may include a third generation (3G) basebandprocessor 204A, a fourth generation (4G) baseband processor 204B, afifth generation (5G) baseband processor 204C, or other basebandprocessor(s) 204D for other existing generations, generations indevelopment or to be developed in the future (e.g., second generation(2G), sixth generation (6G), etc.). The baseband circuitry 204 (e.g.,one or more of baseband processors 204A-D) may handle various radiocontrol functions that enable communication with one or more radionetworks via the RF circuitry 206. In other aspects, some or all of thefunctionality of baseband processors 204A-D may be included in modulesstored in the memory 204G and executed via a Central Processing Unit(CPU) 204E. The radio control functions may include, but are not limitedto, signal modulation/demodulation, encoding/decoding, radio frequencyshifting, etc. In some aspects, modulation/demodulation circuitry of thebaseband circuitry 204 may include Fast-Fourier Transform (FFT),preceding, or constellation mapping/demapping functionality. In someaspects, encoding/decoding circuitry of the baseband circuitry 204 mayinclude convolution, tail-biting convolution, turbo, Viterbi, or LowDensity Parity Check (LDPC) encoder/decoder functionality. Aspects ofmodulation/demodulation and encoder/decoder functionality are notlimited to these examples and may include other suitable functionalityin other aspects.

In some aspects, the baseband circuitry 204 may include one or moreaudio digital signal processor(s) (DSP) 204F. The audio DSP(s) 204F maybe include elements for compression/decompression and echo cancellationand may include other suitable processing elements in other aspects.Components of the baseband circuitry may be suitably combined in asingle chip, a single chipset, or disposed on a same circuit board insome aspects. In some aspects, some or all of the constituent componentsof the baseband circuitry 204 and the application circuitry 202 may beimplemented together such as, for example, on a system on a chip (SOC).

In some aspects, the baseband circuitry 204 may provide forcommunication compatible with one or more radio technologies. Forexample, in some aspects, the baseband circuitry 204 may supportcommunication with an evolved universal terrestrial radio access network(EUTRAN) or other wireless metropolitan area networks (WMAN), a wirelesslocal area network (WLAN), a wireless personal area network (WPAN).Aspects in which the baseband circuitry 204 is configured to supportradio communications of more than one wireless protocol may be referredto as multi-mode baseband circuitry,

RF circuitry 206 may enable communication with wireless networks usingmodulated electromagnetic radiation through a non-solid medium. Invarious aspects, the RF circuitry 206 may include switches, filters,amplifiers, etc. to facilitate the communication with the wirelessnetwork. RF circuitry 206 may include a receive signal path which mayinclude circuitry to down-convert RF signals received from the FEMcircuitry 208 and provide baseband signals to the baseband circuitry204. RF circuitry 206 may also include a transmit signal path which mayinclude circuitry to up-convert baseband signals provided by thebaseband circuitry 204 and provide RF output signals to the FEMcircuitry 208 for transmission.

In some aspects, the receive signal path of the RF circuitry 206 mayinclude mixer circuitry 206A, amplifier circuitry 206B and filtercircuitry 206C. In some aspects, the transmit signal path of the RFcircuitry 206 may include filter circuitry 206C and mixer circuitry206A. RF circuitry 206 may also include synthesizer circuitry 206D forsynthesizing a frequency for use by the mixer circuitry 206A of thereceive signal path and the transmit signal path. In some aspects, themixer circuitry 206A of the receive signal path may be configured todown-convert RF signals received from the FEM circuitry 208 based on thesynthesized frequency provided by synthesizer circuitry 206D. Theamplifier circuitry 206B may be configured to amplify the down-convertedsignals and the filter circuitry 206C may be a low-pass filter (LPF) orband-pass filter (BPF) configured to remove unwanted signals from thedown-converted signals to generate output baseband signals. Outputbaseband signals may be provided to the baseband circuitry 204 forfurther processing. In some aspects, the output baseband signals may bezero-frequency baseband signals, although this is not a requirement. Insome aspects, mixer circuitry 206A of the receive signal path maycomprise passive mixers, although the scope of the aspects is notlimited in this respect.

In some aspects, the mixer circuitry 206A of the transmit signal pathmay be configured to up-convert input baseband signals based on thesynthesized frequency provided by the synthesizer circuitry 206D togenerate RF output signals for the FEM circuitry 208. The basebandsignals may be provided by the baseband circuitry 204 and may befiltered by filter circuitry 206C.

In some aspects, the mixer circuitry 206A of the receive signal path andthe mixer circuitry 206A of the transmit signal path may include two ormore mixers and may be arranged for quadrature downconversion andupconversion, respectively. In some aspects, the mixer circuitry 206A ofthe receive signal path and the mixer circuitry 206A of the transmitsignal path may include two or more mixers and may be arranged for imagerejection (e.g., Hartley image rejection). In some aspects, the mixercircuitry 206A of the receive signal path and the mixer circuitry 206Amay be arranged for direct downconversion and direct upconversion,respectively. In some aspects, the mixer circuitry 206A of the receivesignal path and the mixer circuitry 206A of the transmit signal path maybe configured for super-heterodyne operation.

In some aspects, the output baseband signals and the input basebandsignals may be analog baseband signals, although the scope of theaspects is not limited in this respect. In some alternate aspects, theoutput baseband signals and the input baseband signals may be digitalbaseband signals. In these alternate aspects, the RF circuitry 206 mayinclude analog-to-digital converter (ADC) and digital-to-analogconverter (DAC) circuitry and the baseband circuitry 204 may include adigital baseband interface to communicate with the RF circuitry 206.

In some dual-mode aspects, a separate radio IC circuitry may be providedfor processing signals for each spectrum, although the scope of theaspects is not limited in this respect.

In some aspects, the synthesizer circuitry 206D may be a fractional-Nsynthesizer or a fractional N/N+1 synthesizer, although the scope of theaspects is not limited in this respect as other types of frequencysynthesizers may be suitable. For example, synthesizer circuitry 206Dmay be a delta-sigma synthesizer, a frequency multiplier, or asynthesizer comprising a phase-locked loop with a frequency divider.

The synthesizer circuitry 206D may be configured to synthesize an outputfrequency for use by the mixer circuitry 206A of the RF circuitry 206based on a frequency input and a divider control input. In some aspects,the synthesizer circuitry 206D may be a fractional N/N+1 synthesizer.

In some aspects, frequency input may be provided by a voltage controlledoscillator (VCO), although that is not a requirement. Divider controlinput may be provided by either the baseband circuitry 204 or theapplications processor 202 depending on the desired output frequency. Insome aspects, a divider control input (e.g., N) may be determined from alook-up table based on a channel indicated by the applications processor202.

Synthesizer circuitry 206D of the RF circuitry 206 may include adivider, a delay-locked loop (DLL), a multiplexer and a phaseaccumulator. In some aspects, the divider may be a dual modulus divider(DMD) and the phase accumulator may be a digital phase accumulator(DPA). In some aspects, the DMD may be configured to divide the inputsignal by either N or N+1 (e.g., based on a carry out) to provide afractional division ratio. In some example aspects, the DLL may includea set of cascaded, tunable, delay elements, a phase detector, a chargepump and a D-type flip-flop. In these aspects, the delay elements may beconfigured to break a VCO period up into Nd equal packets of phase,where Nd is the number of delay elements in the delay line. In this way,the DLL provides negative feedback to help ensure that the total delaythrough the delay line is one VCO cycle.

In some aspects, synthesizer circuitry 206D may be configured togenerate a carrier frequency as the output frequency, while in otheraspects, the output frequency may be a multiple of the carrier frequency(e.g., twice the carrier frequency, four times the carrier frequency)and used in conjunction with quadrature generator and divider circuitryto generate multiple signals at the carrier frequency with multipledifferent phases with respect to each other. In some aspects, the outputfrequency may be a LO frequency (fLO). In some aspects, the RF circuitry206 may include an IQ/polar converter.

FEM circuitry 208 may include a receive signal path which may includecircuitry configured to operate on RF signals received from one or moreantennas 210, amplify the received signals and provide the amplifiedversions of the received signals to the RF circuitry 206 for furtherprocessing. FEM circuitry 208 may also include a transmit signal pathwhich may include circuitry configured to amplify signals fortransmission provided by the RF circuitry 206 for transmission by one ormore of the one or more antennas 210. In various aspects, theamplification through the transmit signal paths or the receive signalpaths may be done solely in the RF circuitry 206, solely in the FEM 208,or in both the RF circuitry 206 and the FEM 208.

In some aspects, the FEM circuitry 208 may include a TX/RX switch toswitch between transmit mode and receive mode operation. The FEMcircuitry may include a receive signal path and a transmit signal path.The receive signal path of the FEM circuitry may include an LNA toamplify received RF signals and provide the amplified received RFsignals as an output (e.g., to the RF circuitry 206). The transmitsignal path of the FEM circuitry 208 may include a power amplifier (PA)to amplify input RF signals (e.g., provided by RF circuitry 206), andone or more filters to generate RF signals for subsequent transmission(e.g., by one or more of the one or more antennas 210).

In some aspects, the PMC 212 may manage power provided to the basebandcircuitry 204. In particular, the PMC 212 may control power-sourceselection, voltage scaling, battery charging, or DC-to-DC conversion.The PMC 212 may often be included when the device 200 is capable ofbeing powered by a battery, for example, when the device is included ina UE. The PMC 212 may increase the power conversion efficiency whileproviding desirable implementation size and heat dissipationcharacteristics.

While FIG. 2 shows the PMC 212 coupled only with the baseband circuitry204. However, in other aspects, the PMC 212 may be additionally oralternatively coupled with, and perform similar power managementoperations for, other components such as, but not limited to,application circuitry 202, RF circuitry 206, or FEM 208.

In some aspects, the PMC 212 may control, or otherwise be part of,various power saving mechanisms of the device 200. For example, if thedevice 200 is in an RRC_Connected state, where it is still connected tothe RAN node as it expects to receive traffic shortly, then it may entera state known as Discontinuous Reception Mode (DRX) after a period ofinactivity. During this state, the device 200 may power down for briefintervals of time and thus save power.

If there is no data traffic activity for an extended period of time,then the device 200 may transition off to an RRC_Idle state, where itdisconnects from the network and does not perform operations such aschannel quality feedback, handover, etc. The device 200 goes into a verylow power state and it performs paging where again it periodically wakesup to listen to the network and then powers down again. The device 200may transition back to RRC_Connected state in order to receive data.

An additional power saving mode may allow a device to be unavailable tothe network for periods longer than a paging interval (ranging fromseconds to a few hours). During this time, the device is totallyunreachable to the network and may power down completely. Any data sentduring this time incurs a large delay and it is assumed the delay isacceptable.

Processors of the application circuitry 202 and processors of thebaseband circuitry 204 may be used to execute elements of one or moreinstances of a protocol stack. For example, processors of the basebandcircuitry 204, alone or in combination, may be used execute Layer 3,Layer 2, or Layer 1 functionality, while processors of the applicationcircuitry 204 may utilize data (e.g., packet data) received from theselayers and further execute Layer 4 functionality (e.g., transmissioncommunication protocol (TCP) and user datagram protocol (UDP) layers).As referred to herein, Layer 3 may comprise a radio resource control(RRC) layer, described in further detail below. As referred to herein,Layer 2 may comprise a medium access control (MAC) layer, a radio linkcontrol (RLC) layer, and a packet data convergence protocol (PDCP)layer, described in further detail below. As referred to herein, Layer 1may comprise a physical (PHY) layer of a UE/RAN node, described infurther detail below.

FIG. 3 illustrates example interfaces of baseband circuitry inaccordance with some aspects. As discussed above, the baseband circuitry204 of FIG. 2 may comprise processors 204A-204E and a memory 204Gutilized by said processors. Each of the processors 204A-204E mayinclude a memory interface, 304A-304E, respectively, to send/receivedata to/from the memory 204G.

The baseband circuitry 204 may further include one or more interfaces tocommunicatively couple to other circuitries/devices, such as a memoryinterface 312 (e.g., an interface to send/receive data to/from memoryexternal to the baseband circuitry 204), an application circuitryinterface 314 (e.g., an interface to send/receive data to/from theapplication circuitry 202 of FIG. 2), an RF circuitry interface 316(e.g., an interface to send/receive data to/from RF circuitry 206 ofFIG. 2), a wireless hardware connectivity interface 318 (e.g., aninterface to send/receive data to/from Near Field Communication (NFC)components, Bluetooth® components (e.g., Bluetooth® Low Energy), Wi-Fi®components, and other communication components), and a power managementinterface 320 (e.g., an interface to send/receive power or controlsignals to/from the PMC 212).

FIG. 4 is an illustration of a control plane protocol stack inaccordance with some aspects. In this aspect, a control plane 400 isshown as a communications protocol stack between the UE 101 (oralternatively, the UE 102), the RAN node 111 (or alternatively, the RANnode 112), and the MME 121.

The PHY layer 401 may transmit or receive information used by the MAClayer 402 over one or more air interfaces. The PHY layer 401 may furtherperform link adaptation or adaptive modulation and coding (AMC), powercontrol, cell search (e.g., for initial synchronization and handoverpurposes), and other measurements used by higher layers, such as the RRClayer 405. The PHY layer 401 may still further perform error detectionon the transport channels, forward error correction (FEC)coding/decoding of the transport channels, modulation/demodulation ofphysical channels, interleaving, rate matching, mapping onto physicalchannels, and Multiple Input Multiple Output (MIMO) antenna processing.

The MAC layer 402 may perform mapping between logical channels andtransport channels, multiplexing of MAC service data units (SDUs) fromone or more logical channels onto transport blocks (TB) to be deliveredto PHY via transport channels, de-multiplexing MAC SDUs to one or morelogical channels from transport blocks (TB) delivered from the PHY viatransport channels, multiplexing MAC SDUs onto TBs, schedulinginformation reporting, error correction through hybrid automatic repeatrequest (HARQ) and logical channel prioritization.

The RLC layer 403 may operate in a plurality of modes of operation,including: Transparent Mode (TM), Unacknowledged Mode (UM), andAcknowledged Mode (AM). The RLC layer 403 may execute transfer of upperlayer protocol data units (PDUs), error correction through automaticrepeat request (ARQ) for AM data transfers, and concatenation,segmentation and reassembly of RLC SDUs for UM and AM data transfers.The RLC layer 403 may also execute re-segmentation of RLC data PDUs forAM data transfers, reorder RLC data PDUs for UM and AM data transfers,detect duplicate data for UM and AM data transfers, discard RLC SDUs forUM and AM data transfers, detect protocol errors for AM data transfers,and perform RLC re-establishment.

The PDCP layer 404 may execute header compression and decompression ofIP data, maintain PDCP Sequence Numbers (SNs), perform in-sequencedelivery of upper layer PDUs at re-establishment of lower layers,eliminate duplicates of lower layer SDUs at re-establishment of lowerlayers for radio bearers mapped on RLC AM, cipher and decipher controlplane data, perform integrity protection and integrity verification ofcontrol plane data, control timer-based discard of data, and performsecurity operations (e.g., ciphering, deciphering, integrity protection,integrity verification, etc.

The main services and functions of the RRC layer 405 may includebroadcast of system information (e.g., included in Master InformationBlocks (MIBs) or System Information Blocks (SIBs) related to thenon-access stratum (NAS)), broadcast of system information related tothe access stratum (AS), paging, establishment, maintenance and releaseof an RRC connection between the UE and E-UTRAN (e.g., RRC connectionpaging, RRC connection establishment, RRC connection modification, andRRC connection release), establishment, configuration, maintenance andrelease of point to point Radio Bearers, security functions includingkey management, inter radio access technology (RAT) mobility, andmeasurement configuration for UE measurement reporting. Said MIBs andSIBs may comprise one or more information elements (IEs), which may eachcomprise individual data fields or data structures.

The UE 101 and the RAN node 111 may utilize a Uu interface (e.g., anLTE-Uu interface) to exchange control plane data via a protocol stackcomprising the PHY layer 401, the MAC layer 402, the RLC layer 403, thePDCP layer 404, and the RRC layer 405.

The non-access stratum (NAS) protocols 406 form the highest stratum ofthe control plane between the UE 101 and the MME 121. The NAS protocols406 support the mobility of the UE 101 and the session managementprocedures to establish and maintain IP connectivity between the UE 101and the P-GW 123.

The S1 Application Protocol (S1-AP) layer 415 may support the functionsof the S1 interface and comprise Elementary Procedures (EPs). An EP is aunit of interaction between the RAN node 111 and the CN 120. The S1-APlayer services may comprise two groups: UE-associated services and nonUE-associated services. These services perform functions including, butnot limited to: E-UTRAN Radio Access Bearer (E-RAB) management, UEcapability indication, mobility, NAS signaling transport, RANInformation Management (RIM), and configuration transfer.

The Stream Control Transmission Protocol (SCTP) layer (alternativelyreferred to as the SCTP/IP layer) 414 may ensure reliable delivery ofsignaling messages between the RAN node 111 and the MME 121 based, inpart, on the IP protocol, supported by the IP layer 413. The L2 layer412 and the L1 layer 411 may refer to communication links (e.g., wiredor wireless) used by the RAN node and the MME to exchange information.

The RAN node 111 and the MME 121 may utilize an S1-MME interface toexchange control plane data via a protocol stack comprising the L1 layer411, the L2 layer 412, the IP layer 413, the SCTP layer 414, and theS1-AP layer 415.

FIG. 5 is an illustration of a user plane protocol stack in accordancewith some aspects. In this aspect, a user plane 500 is shown as acommunications protocol stack between the UE 101 (or alternatively, theUE 102), the RAN node 111 (or alternatively, the RAN node 112), the S-GW122, and the P-GW 123. The user plane 500 may utilize at least some ofthe same protocol layers as the control plane 400. For example, the UE101 and the RAN node 111 may utilize a Uu interface (e.g., an LTE-Uuinterface) to exchange user plane data via a protocol stack comprisingthe PHY layer 401, the MAC layer 402, the RLC layer 403, and the PDCPlayer 404.

The General Packet Radio Service (GPRS) Tunneling Protocol for the userplane (GTP-U) layer 504 may be used for carrying user data within theGPRS core network and between the radio access network and the corenetwork. The user data transported can be packets in any of IPv4, IPv6,or PPP formats, for example. The UDP and IP security (UDP/IP) layer 503may provide checksums for data integrity, port numbers for addressingdifferent functions at the source and destination, and encryption andauthentication on the selected data flows. The RAN node 111 and the S-GW122 may utilize an S1-U interface to exchange user plane data via aprotocol stack comprising the L1 layer 411, the L2 layer 412, the UDP/IPlayer 503, and the GTP-U layer 504. The S-GW 122 and the P-GW 123 mayutilize an S5/S8a interface to exchange user plane data via a protocolstack comprising the L1 layer 411, the L2 layer 412, the UDP/IP layer503, and the GTP-U layer 504. As discussed above with respect to FIG. 4,NAS protocols support the mobility of the UE 101 and the sessionmanagement procedures to establish and maintain IP connectivity betweenthe UE 101 and the P-GW 123.

FIG. 6 is a block diagram illustrating components, according to someexample aspects, able to read instructions from a machine-readable orcomputer-readable medium (e.g., a non-transitory machine-readablestorage medium) and perform any one or more of the methodologiesdiscussed herein. Specifically, FIG. 6 shows a diagrammaticrepresentation of hardware resources 600 including one or moreprocessors (or processor cores) 610, one or more memory/storage devices620, and one or more communication resources 630, each of which may becommunicatively coupled via a bus 640. For aspects where nodevirtualization (e.g., NFV) is utilized, a hypervisor 602 may be executedto provide an execution environment for one or more networkslices/sub-slices to utilize the hardware resources 600

The processors 610 (e.g., a central processing unit (CPU), a in reducedinstruction set computing (RISC) processor, a complex instruction setcomputing (CISC) processor, a graphics processing unit (GPU), a digitalsignal processor (DSP) such as a baseband processor, an applicationspecific integrated circuit (ASIC), a radio-frequency integrated circuit(RFIC), another processor, or any suitable combination thereof) mayinclude, for example, a processor 612 and a processor 614.

The memory/storage devices 620 may include main memory, disk storage, orany suitable combination thereof. The memory/storage devices 620 mayinclude, but are not limited to any type of volatile or non-volatilememory such as dynamic random access memory (DRAM), static random-accessmemory (SRAM), erasable programmable read-only memory (EPROM),electrically erasable programmable read-only memory (EEPROM), Flashmemory, solid-state storage, etc.

The communication resources 630 may include interconnection or networkinterface components or other suitable devices to communicate with oneor more peripheral devices 604 or one or more databases 606 via anetwork 608. For example, the communication resources 630 may includewired communication components (e.g., for coupling via a UniversalSerial Bus (USB)), cellular communication components, NFC components,Bluetooth® components (e.g., Bluetooth® Low Energy), Wi-Fi® components,and other communication components.

Instructions 650 may comprise software, a program, an application, anapplet, an app, or other executable code for causing at least any of theprocessors 610 to perform any one or more of the methodologies discussedherein. The instructions 650 may reside, completely or partially, withinat least one of the processors 610 (e.g., within the processor's cachememory), the memory/storage devices 620, or any suitable combinationthereof. Furthermore, any portion of the instructions 650 may betransferred to the hardware resources 600 from any combination of theperipheral devices 604 or the databases 606. Accordingly, the memory ofprocessors 610, the memory/storage devices 620, the peripheral devices604, and the databases 606 are examples of computer-readable andmachine-readable media.

FIG. 7 illustrates examples of multiple beam transmissions in accordancewith some aspects. Although the example scenarios 700 and 750 depictedin FIG. 7 may illustrate some aspects of techniques disclosed herein, itwill be understood that embodiments are not limited by example scenarios700 and 750. Embodiments are not limited to the number or type ofcomponents shown in FIG. 7 and are also not limited to the number orarrangement of transmitted beams shown in FIG. 7.

In example scenario 700, the eNB 104 may transmit a signal on multiplebeams 705-720, any or all of which may be received at the UE 102. Insome aspects, the multiple beams 705-720 can include synchronizationsignals and can form an SS burst set, which can be used by the UE 102for discovery and measurement in connection with beamforming. It shouldbe noted that the number of beams or transmission angles as shown arenot limiting. As the beams 705-720 may be directional, transmittedenergy from the beams 705-720 may be concentrated in the directionshown. Therefore, the UE 102 may not necessarily receive a significantamount of energy from beams 705 and 710 in some cases, due to therelative location of the UE 102.

UE 102 may receive a significant amount of energy from the beams 715 and720 as shown. As an example, the beams 705-720 may be transmitted usingdifferent reference signals, and the UE 102 may determine channel-stateinformation (CSI) feedback or other information for beams 715 and 720.In some aspects, each of beams 705-720 are configured as CSI referencesignals (CSI-RS). In related embodiments, the CSI-RS signal is a part ofthe discovery reference signaling (DRS) configuration. The DRSconfiguration may serve to inform the UE 102 about the physicalresources (e.g., subframes, subcarriers) on which the CSI-RS signal willbe found. In related embodiments, the UE 102 is further informed aboutany scrambling sequences that are to be applied for CSI-RS. In someaspects, each of the beams 705-720 can be configured as synchronizationsignals, such as PSS/SSS or NRSS.

In some embodiments, up to 2 MIMO layers may be transmitted within eachbeam by using different polarizations. More than 2 MIMO layers may betransmitted by using multiple beams. In related embodiments, the UE isconfigured to discover the available beams and report those discoveredbeams to the eNB prior to the MIMO data transmissions using suitablereporting messaging. Based on the reporting messaging, the eNB 104 maydetermine suitable beam directions for the MIMO layers to be used fordata communications with the UE 102. In various embodiments, there maybe up to 2, 4, 8, 16, 32, or more MIMO layers, depending on the numberof MIMO layers that are supported by the eNB 104 and UE 102. In a givenscenario, the number of MIMO layers that may actually be used willdepend on the quality of the signaling received at the UE 102, and theavailability of reflected beams arriving at diverse angles at the UE 102such that the UE 102 may discriminate the data carried on the separatebeams.

In the example scenario 750, the UE 102 may determine angles or otherinformation (such as CSI feedback/report, including beam index,precoder, channel-quality indicator (CQI) or other) for the beams 765and 770. The UE 102 may also determine such information when received atother angles, such as the illustrated beams 775 and 780. The beams 775and 780 are demarcated using a dotted line configuration to indicatethat they may not necessarily be transmitted at those angles, but thatthe UE 102 may determine the beam directions of beams 775 and 780 usingsuch techniques as receive beam-forming, as receive directions. Thissituation may occur, for example, when a transmitted beam reflects froman object in the vicinity of the UE 102, and arrives at the UE 102according to its reflected, rather than incident, angle.

As an example, the first signal received from the first eNB 104 mayinclude a first directional beam based at least partly on a firstreference signal and a second directional beam based at least partly ona second reference signal. The UE 102 may determine a rank indicator(RI) for the first reference signal and an RI for the second referencesignal, and may transmit both RIs in the CSI messages. In an example,the reference signal (RS) can be a CSI-RS or a cell-specific referencesignal (CRS). In addition, the UE 102 may determine one or more RIs forthe second signal, and may also include them in the CSI messages in somecases. In some embodiments, the UE 102 may also determine a CQI, apreceding matrix indicator (PMI), receive angles or other informationfor one or both of the first and second signals. Such information may beincluded, along with one or more RIs, in the one or more CSI messages.In some embodiments, the UE 102 performs reference signal receive power(RSRP) measurement, received signal strength indication (RSSI)measurement, reference signal receive quality (RSRQ) measurement,signal-to-interference-plus-noise ratio (SINR), or some combination ofthese using reference signals.

FIG. 8 illustrates a UE performing beamforming measurements inaccordance with some aspects. Referring to FIG. 8, there is illustrateda UE 102 communicating with GNB's 802 and 804. More specifically, GNB802 can communicate an SS burst set 806 to the UE 102 for beamformingmeasurements. Similarly, GNB 804 can communicate an SS burst set to theUE 102 for beamforming measurements. In instances when multiple TRP'sare associated with the cell of a GNB, the SS burst set communicated tothe UE from within the cell can include synchronization signals frommultiple TRP's associated with the same cell. For example, in instanceswhen communication nodes 802 and 804 are TRP's associated with the samecell, the SS burst sets 806 and 808 can be communicated as a single SSburst set to the UE 102. As used herein, the term “SS burst set” can beused interchangeably with the term “SS block burst set.”

Each of the SS burst sets 806 and 808 can include a plurality ofsynchronization signals (e.g., NRSS, PSS, and SSS), which can be used bythe UE 102 for beamforming measurements. As used herein, eachsynchronization signal within an SS burst set can also be referred to asan SS block. For example, the UE 102 can measure the receive SS burstand sent back a cell beamforming measurement based on the entirereceived SS burst set, and/or it may send one or more individual beammeasurements (e.g., measurements associated with the highlighted beamsas seen in FIG. 8).

FIG. 9 illustrates SS burst set measurements at a first time T1 inaccordance with some aspects. FIG. 10 illustrates SS burst setmeasurements at a second time T2 in accordance with some aspects.Referring to FIG. 9, there is illustrated beamforming measurements forthe SS burst set 900 at time T1. More specifically, the SS burst sets900 can include a plurality of SS blocks (e.g., a plurality of bursts asindicated in FIG. 9), with visible peaks associated with SS blocks 902,904, 906, 908, 910, and 912. Similarly, FIG. 10 illustrates beamformingmeasurements for the SS burst set 1000 at time T2. More specifically,the SS burst set 1000 can include a plurality of SS blocks, with visiblepeaks associated with SS blocks 1002, 1004, 1006, 1008, 1010, and 1012.

In some aspects, the SS block measurements within a received SS burstset can be performed periodically, using one or more of the followingtechniques. In some aspects, a maximum value of an SS block within an SSburst set can be reported as the cell beamforming measurement. Forexample, SS block 912 in SS burst set 900 has a maximum measured value(e.g., signal strength or another signal quality measurement), and thesignal measurement for SS block 912 can be reported as the cellbeamforming measurement associated with SS burst set 900.

In some aspects, an average measurement over the SS burst set durationcan be reported as the cell beamforming measurement. For example and inreference to FIG. 10, an average measurement can be calculated using themeasurements for SS blocks 1002-1012, and the average measurement can bereported as the cell beamforming measurement associated with SS burstset 1000.

In some aspects, a sum of the measurements of all detected SS blockswithin an SS burst set can be reported as the cell beamformingmeasurement. For example and in reference to FIG. 9, individualmeasurements for each of the SS blocks 902-912 can be summed to generatea single summed measurement that can be reported back to the NodeB(e.g., a gNB) as the cell beamforming measurement. In some aspects, theaverage measurement or the summed measurement described above can benormalized by a maximum value of the SS block measurements within an SSburst set.

In some aspects, an average measurement of individual SS blockmeasurements that are above a threshold can be reported as the cellbeamforming measurement. For example and in reference to FIG. 9, athreshold value can be set just above the signal measurement for SSblock 910. In this regard, signal measurements for SS blocks 902, 908,and 912 will be above the threshold, and an average measurement can becalculated using only the signal measurements for SS blocks 902, 908,and 912. In some aspects, a summed measurement can be determined usingthe signal measurements that are above the threshold (i.e., a summedmeasurement based on the signal measurements for SS blocks 902, 908, and912), and can be communicated as the cell beamforming measurement.

In some aspects, an average measurement or a summed measurement can begenerated using signal measurements for top N peaks, where N is aninteger greater than one. For example, for N=3, an average or a summedmeasurement can be generated using the signal measurement valuesassociated with SS blocks 902, 908, and 912. In the above examples, thethreshold value as well as the value of N can be communicated to the UEby the network (e.g. by the gNB) using higher layer signaling. In someaspects, any of the measurement values discussed herein above can benormalized by a number that is communicated by the network (e.g., anumber of TRP's within the cell or another value selected by thenetwork).

Even though communication of a cell beamforming measurement is discussedherein above, the disclosure is not limited in this regard. In someaspects, one or more individual beam measurements can also be determinedusing the SS burst set and then communicated back to the gNB forpurposes of beamforming.

FIG. 11 illustrates an example communication sequence 1100 forperforming a handover procedure in accordance with some aspects.Referring to FIG. 11, the example communication sequence 1100 Can TakePl. between a UE 1102, a source gNB 1104, a target gNB 1106, and a newgeneration core network entity such as AMF 1108. At 1110, mobilitycontrol information such as UE context is provided by the AMF 1108. TheUE context within the source gNB 1104 can include information regardingroaming and access restrictions, and can be provided at connectionestablishment or during a timing advance update. At 1112, the source gNB1104 can communicate measurement procedure configurations 1112 to the UE1102, to configure the UE measurement procedures. For example and inreference to FIG. 12, the configurations 1112 can include radio resourcecontrol (RRC) configuration parameters used during beam selection, beamconsolidation, filtering, and so forth, as indicated in FIG. 12.

At 1114, the UE 1102 can communicate a measurement report to the sourcegNB 1104. In some aspects, the measurement report 1114 can include oneor more measurements for beamforming, such as a cell beamformingmeasurement and/or one or more individual beam measurements based on anSS burst set received at the UE 1102. The measurement report can furtherinclude radio resource management information. At 1116, the source gNB1104 can make a decision to handover the UE to the target gNB 1106. At1118, the source gNB 1104 can communicate a handover request to thetarget gNB 1106, to initiate the handover. At 1120, the target gNB 1106can perform admission control and can provide radio resource control(RRC) configuration as part of the handover request acknowledgment at1122. In some aspects, the handover request acknowledgment at 1122 caninclude a transparent container to be sent to the UE as an RRC messagein order to perform the handover. At 1124, the source gNB 1104 canprovide the RRC configuration to the UE 1102 in the handover command. Insome aspects, the handover command message can include cell IDinformation as well as additional information that can he used by the UEto access the target gNB 1106 without reading system information. Insome aspects, the handover command message can further includeinformation that can be used for contention-based and contention-freerandom access. At 1126, the UE 1102 can move the RRC connection andswitch to the new cell associated with the target gNB 1106. At 1128, ahandover complete message can be communicated to the target gNB 1106.

FIG. 12 illustrates example filtering circuitry which can be used by aUE to filter SS blocks received within a SS burst set in accordance withsome aspects. Referring to FIG. 12, the filtering circuitry 1200 can beimplemented within the UE (e.g., 102) and can be configured to performsignal measurement filtering, such as filtering of a cell beamformingmeasurement signal as well as individual beam measurements, prior tocommunication of such measurements to the source gNB and/or anothernetwork entity.

The filtering circuitry 1200 can include a layer 1 (L1) filteringcircuitry 1204, layer 3 (L3) filtering circuitry 1216 and 1222,consolidation circuitry 1212, evaluation circuitry 1218, and beamselection circuitry 1230.

In operation, the UE can receive an SS burst set an individual signalmeasurements 1202 of beams within the SS burst set can be communicatedto the filtering circuitry 1204. In some aspects, the filteringcircuitry 1204 can include individual L1 filters 1206-1210, and each ofthe L1 filters can be configured to receive and filter a correspondingbeam signal measurement 1202 from the received SS burst set. Forpurposes of generating a single cell beamforming measurement signal, thefiltered signal measurements at the output of filtering circuitry 1204can be communicated to the beam consolidation and selection circuitry1212, which can be configured to consolidate the received measurementsand generate a single beamforming measurement 1214. The singlemeasurement 1214 is received at the L3 filtering circuitry 1216, whichcan be configured to perform L3 filtering. The filtered singlemeasurement signal output from the L3 filtering circuitry 1216 isreceived by the evaluation circuitry 1218. The evaluation circuitry 1218evaluates the single measurement in connection with one or moreevaluation criteria to determine whether to output the singlemeasurement. Upon successful evaluation by the evaluation circuitry1218, a single cell beamforming measurement 1220 is output.

In instances when individual beam measurement reporting is configuredto, the L1 filtered measurement signals output by the L1 filteringcircuitry 1204 are communicated to L3 filtering circuit 1222. Morespecifically, each of the L1 filtered signal measurements is received bya corresponding L3 filter 1224-1228 within the L3 filtering circuitry1222. L3 filtered be measurement signals are then communicated to thebeam selection circuitry 1230. The beam selection circuitry 1230 canapply one or more selection criteria and select individual beammeasurement signals 1232 four output.

In some aspects and in connection with one of the options describedherein above for generating a cell beamforming measurement, L1 filteringcan be applied to individual beam measurements and L3 filtering can beapplied on a single cell level measurement, as described in reference togenerating the single cell level beamforming measurement 1220 in FIG.12.

In some aspects and in connection with one or more of the optionsdescribed herein above for generating a cell beamforming measurement,signal measurement peaks for signal measurements within an SS burst setcan be sorted (e.g., in a descending order), and L1/L3 filtering can beapplied to the order of the sorted beams. For example, if top N peaks ofthe individual signal measurements within a received SS burst set areconfigured, then the L1/L3 filtering can apply to the highest peak, thesecond highest peak, and so forth along the SS burst set. In someaspects, the individual signal measurements within a received SS burstset can he left unsorted and corresponding L1/L3 filters can be appliedto the individual signal measurements in the order the signals arereceived, i.e., signal measurements are processed based on signal timeindex.

FIG. 13 illustrates various example scenarios with different measurementand data coverage associated with a cell in accordance with someaspects. Referring to FIG. 13, the communication environment 1300 caninclude multiple cells with multiple TRP's associated with each cell.For example, a first cell 1302 can include TRP's 1310, 1312, 1314, 1316,and 1318. A second cell 1304 can include TRP's 1320, 1322, and 1324. AUE, which is indicated as A, B or C in FIG. 13, can be at differentlocations within cell 1302 or cell 1304.

In some aspects, the TRP's within each cell can form beams inmeasurement at the UE. In this regard, the UE will receive the sum ofthe multiple beams signals but it may not identify that the receivedbeam signals (e.g., within an SS burst set) originates from multipleTRP's within a cell. The following data coverage challenges may beaddressed:

In instances when the UE is at position 1330 within cell 1302, the UEcan perform cell beamforming measurements using synchronization signalsreceived from TRP's 1310-1318. However, when the data channel is formedto the UE at location 1330, there may be no coverage as data coverage1306 four cell 1302 is outside of the UE position 1330.

In instances when the UE is at position 1340 covered by both cells 1302and 1304, the UE may have no coverage in data for cell 1302 (since it isoutside of the data coverage area 1306 for cell 1302) but may obtainmeasurements associated with synchronization signals received from TRP'swithin cell 1302. Beamforming measurements can also be formed for cell1304 based on synchronization signals received from TRP's 1320-1324associated with cell 1304. The beamforming measurements can be strongerin cell 1302 or 1304. In instances one beamforming measurements arestronger in cell 1302, the UE may experience no data coverage in cell1302 (since the UE is outside of the data coverage area 1306) and mayneed to handover to cell 1304.

In instances when the UE is at position 1350, the beamformingmeasurements may indicate that the UE should reselect or handover tocell 1304. However, since the UE is outside of the data coverage area1308 associated with cell 1304, the UE may need to handover back to cell1302.

To address the above potential measurement and data coverage andimbalance issues, in some aspects, the network may allocate additionalsignaling (e.g., channel state information reference signal (CSI-RS)measurement) after the UE has communicated the RRM measurement (i.e. thecell beamforming measurement) based on the SS burst set. The additionalsignaling allocated by the network can include data coverage informationassociated with the source and/or target cells. In this case, the UE canuse the additional information communicated by the network, whichincludes the real data coverage of the potential target cell, in orderto determine handover.

In some aspects, fallback mode can be enabled at the UE so that when theUE reselects or performs handover to the target gNB, the UE does notremove all of the source gNB configuration until it is sure it can campsuccessfully at the target gNB. In instances when the UE cannotsuccessfully reselect the target gNB or perform a handover to the targetgNB, the UE can go back and connect to the source gNB. Additionalsignaling may be used by the UE to indicate to the source or target gNBwhen handover is completed. In instances when handover is not completed,the UE may indicate to the source gNB and fast fallback can take placebased on the retained source gNB configuration information.

In some aspects, serving cell radio link monitoring (RLM) may bedifferent from radio resource management (RRM) associated withgenerating beamforming measurements, the following options to performserving cell RRM can be used. Radio link monitoring can be used by theUE to ensure the UE has good connection with the serving cell. Ininstances when the connection is poor, the UE can start a radio linkfailure (RLF) timer, and when the RLF timer expires, the UE can declarea radio link failure. In one aspect, the UE can use the current servingcell beam measurement as RRM. In this case, the comparison with aneighboring cell RRM will use one of the above options for determining abeamforming measurement, and such measurement can be different from theserving cell measurement. Put another way, the UE can use the samemethod to measure serving cell as used in RLM.

In another aspect, serving cell RRM can be the same as a neighboringcell RRM. In this case, RLM (and therefore RLF) procedure may bedifferent from the RRM cell beamforming measurement. Put another way,the UE can use the same RRM procedure is used for the neighboring cell,which will be different from the RLM measurements.

FIG. 14 is a flow diagram illustrating example functionalities forperforming beamforming measurements in accordance with some aspects.Referring to FIG. 14, the example method 1400 can start at 1402, when aconfiguration message from a source serving cell can be decoded. Forexample, source gNB 1104 can communicate the configuration message 1112to the UE 1102, where the configuration message 1112 can be configuredto indicate signal selection criteria for cell measurement reporting.

At 1404, a synchronization signal (SS) burst set associated with one ormore transmission/reception points (TRPs) within a neighboring cell canbe decoded, where the SS burst set can include a plurality of SS blocks.For example, UE 102 can receive the SS burst set 806, which includes aplurality of synchronization signals (or SS blocks). At 1406, a cellbeamforming measurement signal associated with the neighboring cell canbe generated, based on signal measurements of the SS blocks within theSS burst set and the signal selection criteria. For example, theselection criteria can include one or more of the configurationparameters used by the filtering circuitry 1200 (e.g., configurationparameters or criteria used for beam consolidation, beam selection,L1/L3 filtering, cell beamforming measurement reporting criteria, and soforth). A cell beamforming measurement signal can be generated using oneor more of the techniques described herein above. At 1408, a radioresource management (RRM) measurement report message can be encoded fortransmission to the serving cell. The measurement report message (e.g.the report communicated at 1114 in FIG. 11) can be configured to includethe cell beamforming measurement signal. At 1410, a handover commandmessage for initiating a handover to the neighboring cell can bedecoded. The handover command (e.g., the handover command received at1124 in FIG. 11) can be based on the cell beamforming measurementsignal.

FIG. 15 illustrates a block diagram of a communication device such as anevolved Node-B (eNB), a new generation Node-B (gNB), an access point(AP), a wireless station (STA), or a user equipment (UE), in accordancewith some aspects. In alternative aspects, the communication device 1500may operate as a standalone device or may be connected (e.g., networked)to other communication devices.

Circuitry (e.g., processing circuitry) is a collection of circuitsimplemented in tangible entities of the device 1500 that includehardware (e.g., simple circuits, gates, logic, etc.). Circuitrymembership may be flexible over time. Circuitries include members thatmay, alone or in combination, perform specified operations whenoperating. In an example, hardware of the circuitry may be immutablydesigned to carry out a specific operation (e.g., hardwired). In anexample, the hardware of the circuitry may include variably connectedphysical components (e.g., execution units, transistors, simplecircuits, etc.) including a machine readable medium physically modified(e.g., magnetically, electrically, moveable placement of invariantmassed particles, etc.) to encode instructions of the specificoperation.

In connecting the physical components, the underlying electricalproperties of a hardware constituent are changed, for example, from aninsulator to a conductor or vice versa. The instructions enable embeddedhardware (e.g., the execution units or a loading mechanism) to createmembers of the circuitry in hardware via the variable connections tocarry out portions of the specific operation when in operation.Accordingly, in an example, the machine readable medium elements arepart of the circuitry or are communicatively coupled to the othercomponents of the circuitry when the device is operating. In an example,any of the physical components may be used in more than one member ofmore than one circuitry. For example, under operation, execution unitsmay be used in a first circuit of a first circuitry at one point in timeand reused by a second circuit in the first circuitry, or by a thirdcircuit in a second circuitry at a different time. Additional examplesof these components with respect to the device 1500 follow.

In some aspects, the device 1500 may operate as a standalone device ormay be connected (e.g., networked) to other devices. In a networkeddeployment, the communication device 1500 may operate in the capacity ofa server communication device, a client communication device, or both inserver-client network environments. In an example, the communicationdevice 1500 may act as a peer communication device in peer-to-peer (P2P)(or other distributed) network environment. The communication device1500 may be a UE, eNB, PC, a tablet PC, a STB, a PDA, a mobiletelephone, a smart phone, a web appliance, a network router, switch orbridge, or any communication device capable of executing instructions(sequential or otherwise) that specify actions to be taken by thatcommunication device. Further, while only a single communication deviceis illustrated, the term “communication device” shall also be taken toinclude any collection of communication devices that individually orjointly execute a set (or multiple sets) of instructions to perform anyone or more of the methodologies discussed herein, such as cloudcomputing, software as a service (SaaS), other computer clusterconfigurations.

Examples, as described herein, may include, or may operate on, logic ora number of components, modules, or mechanisms. Modules are tangibleentities (e.g., hardware) capable of performing specified operations andmay be configured or arranged in a certain manner. In an example,circuits may be arranged (e.g., internally or with respect to externalentities such as other circuits) in a specified manner as a module. Inan example, the whole or part of one or more computer systems (e.g., astandalone, client or server computer system) or one or more hardwareprocessors may be configured by firmware or software (e.g.,instructions, an application portion, or an application) as a modulethat operates to perform specified operations. In an example, thesoftware may reside on a communication device-readable medium. In anexample, the software, when executed by the underlying hardware of themodule, causes the hardware to perform the specified operations.

Accordingly, the term “module” is understood to encompass a tangibleentity, be that an entity that is physically constructed, specificallyconfigured (e.g., hardwired), or temporarily (e.g., transitorily)configured (e.g., programmed) to operate in a specified manner or toperform part or all of any operation described herein. Consideringexamples in which modules are temporarily configured, each of themodules need not be instantiated at any one moment in time. For example,where the modules comprise a general-purpose hardware processorconfigured using software, the general-purpose hardware processor may beconfigured as respective different modules at different times. Softwaremay accordingly configure a hardware processor, for example, toconstitute a particular module at one instance of time and to constitutea different module at a different instance of time.

Communication device (e.g., UE) 1500 may include a hardware processor1502 (e.g., a central processing unit (CPU), a graphics processing unit(GPU), a hardware processor core, or any combination thereof), a mainmemory 1504, a static memory 1506, and mass storage 1516 (e.g., harddrive, tape drive, flash storage, or other block or storage devices),some or all of which may communicate with each other via an interlink(e.g., bus) 1508.

The communication device 1500 may further include a display unit 1510,an alphanumeric input device 1512 (e.g., a keyboard), and a userinterface (UI) navigation device 1514 (e.g., a mouse). In an example,the display unit 1510, input device 1512 and UI navigation device 1514may be a touch screen display. The communication device 1500 mayadditionally include a signal generation device 1518 (e.g., a speaker),a network interface device 1520, and one or more sensors 1521, such as aglobal positioning system (GPS) sensor, compass, accelerometer, or othersensor. The communication device 1500 may include an output controller1528, such as a serial (e.g., universal serial bus (USB), parallel, orother wired or wireless (e.g., infrared (IR), near field communication(NFC), etc.) connection to communicate or control one or more peripheraldevices (e.g., a printer, card reader, etc.).

The storage device 1516 may include a communication device-readablemedium 1522, on which is stored one or more sets of data structures orinstructions 1524 (e.g., software) embodying or utilized by any one ormore of the techniques or functions described herein. In some aspects,registers of the processor 1502, the main memory 1504, the static memory1506, and/or the mass storage 1516 may be, or include (completely or atleast partially), the device-readable medium 1522, on which is storedthe one or more sets of data structures or instructions 1524, embodyingor utilized by any one or more of the techniques or functions describedherein. In an example, one or any combination of the hardware processor1502, the main memory 1504, the static memory 1506, or the mass storage1516 may constitute the device-readable medium 1522.

As used herein, the term “device-readable medium” is interchangeablewith “computer-readable medium” or “machine-readable medium”. While thecommunication device-readable medium 1522 is illustrated as a singlemedium, the term “communication device-readable medium” may include asingle medium or multiple media (e.g., a centralized or distributeddatabase, and/or associated caches and servers) configured to store theone or more instructions 1524.

The term “communication device-readable medium” may include any mediumthat is capable of storing, encoding, or carrying instructions forexecution by the communication device 1500 and that cause thecommunication device 1500 to perform any one or more of the techniquesof the present disclosure, or that is capable of storing, encoding orcarrying data structures used by or associated with such instructions.Non-limiting communication device-readable medium examples may includesolid-state memories, and optical and magnetic media. Specific examplesof communication device-readable media may include: non-volatile memory,such as semiconductor memory devices (e.g., Electrically ProgrammableRead-Only Memory (EPROM), Electrically Erasable Programmable Read-OnlyMemory (EEPROM)) and flash memory devices; magnetic disks, such asinternal hard disks and removable disks; magneto-optical disks; RandomAccess Memory (RAM); and CD-ROM and DVD-ROM disks. In some examples,communication device-readable media may include non-transitorycommunication device-readable media. In some examples, communicationdevice-readable media may include communication device-readable mediathat is not a transitory propagating signal.

The instructions 1524 may further be transmitted or received over acommunications network 1526 using a transmission medium via the networkinterface device 1520 utilizing any one of a number of transferprotocols (e.g., frame relay, internet protocol (IP), transmissioncontrol protocol (TCP), user datagram protocol (UDP), hypertext transferprotocol (HTTP), etc.). Example communication networks may include alocal area network (LAN), a wide area network (WAN), a packet datanetwork (e.g., the Internet), mobile telephone networks (e.g., cellularnetworks), Plain Old Telephone (POTS) networks, and wireless datanetworks (e.g., Institute of Electrical and Electronics Engineers (IEEE)802.11 family of standards known as Wi-Fi®, IEEE 802.16 family ofstandards known as WiMax®), IEEE 802.15.4 family of standards, a LongTerm Evolution (LTE) family of standards, a Universal MobileTelecommunications System (UMTS) family of standards, peer-to-peer (P2P)networks, among others. In an example, the network interface device 1520may include one or more physical jacks (e.g., Ethernet, coaxial, orphone jacks) or one or more antennas to connect to the communicationsnetwork 1526. In an example, the network interface device 1520 mayinclude a plurality of antennas to wirelessly communicate using at leastone of single-input multiple-output (SIMO), MIMO, or multiple-inputsingle-output (MISO) techniques. In some examples, the network interfacedevice 1520 may wirelessly communicate using Multiple User MIMOtechniques.

The term “transmission medium” shall be taken to include any intangiblemedium that is capable of storing, encoding or carrying instructions forexecution by the communication device 1500, and includes digital oranalog communications signals or other intangible medium to facilitatecommunication of such software. In this regard, a transmission medium inthe context of this disclosure is a device-readable medium.

ADDITIONAL NOTES AND EXAMPLES

Example 1 is an apparatus of a user equipment (UE), the apparatuscomprising: processing circuitry, the processing circuitry configuredto: decode a configuration message from a source serving cell, theconfiguration message indicating signal selection criteria for cellmeasurement reporting; decode a synchronization signal (SS) burst setassociated with one or more transmission/reception points (TRPs) withina neighboring cell, the SS burst set comprising a plurality of SSblocks; generate a cell beamforming measurement signal associated withthe neighboring cell, based on signal measurements of the SS blockswithin the SS burst set and the signal selection criteria; encode aradio resource management (RRM) measurement report message fortransmission to the serving cell, the measurement report messageincluding the cell beamforming measurement signal; and decode a handovercommand message for initiating a handover to the neighboring cell, thehandover command responsive to the cell beamforming measurement signal;and memory coupled to the processing circuitry, the memory configured tostore the signal selection criteria.

In Example 2, the subject matter of Example 1 includes, wherein the cellbeamforming measurement signal is indicative of signal strength of theSS blocks originating from the neighboring cell, and wherein each of theSS blocks comprise a new radio synchronization signal (NRSS).

In Example 3, the subject matter of Examples 1-2 includes, wherein theprocessing circuitry is further configured to: decode a second SS burstset associated with one or more TRPs within the source serving cell; andgenerate a second cell beamforming measurement signal for transmissionto the source serving cell, based on signal measurements of SS blockswithin the second SS burst set and the signal selection criteria, thehandover command message further based on the second cell beamformingmeasurement signal.

In Example 4, the subject matter of Examples 1-3 includes, wherein theprocessing circuitry is further configured to: perform measurement onone of the plurality of SS blocks associated with a maximum signalstrength among the plurality of SS blocks to generate the cellbeamforming measurement signal.

In Example 5, the subject matter of Examples 1-4 includes, wherein theprocessing circuitry is further configured to: generate an average SSblock using the plurality of SS blocks; perform measurement on theaverage SS block to generate the cell beamforming measurement signal;and normalize the average SS block using one of the plurality of SSblocks associated with a maximum signal strength.

In Example 6, the subject matter of Examples 1-5 includes, wherein theprocessing circuitry is further configured to: generate a summed SSblock using the plurality of SS blocks; perform measurement on thesummed SS block to generate the cell beamforming measurement signal; andnormalize the summed SS block using one of the plurality of SS blocksassociated with a maximum signal strength.

In Example 7, the subject matter of Examples 1-6 includes, wherein theprocessing circuitry is further configured to: generate a summed SSblock using a subset of the plurality of SS blocks associated with asignal strength above a threshold; and perform measurement on the summedSS block to generate the cell beamforming measurement signal.

In Example 8, the subject matter of Examples 1-7 includes, wherein theprocessing circuitry is further configured to: generate a summed SSblock using a subset of the plurality of SS blocks associated with asignal strength above a threshold; and perform measurement on the summedSS block to generate the cell beamforming measurement signal.

In Example 9, the subject matter of Examples 1-8 includes, wherein theprocessing circuitry is further configured to: generate a summed SSblock using a subset of the plurality of SS blocks, wherein the subsetof the SS blocks represent top N synchronization signals with a highestsignal strength within the SS burst set, wherein N is an integer greaterthan 1; and perform measurement on the summed SS block to generate thecell beamforming measurement signal.

In Example 10, the subject matter of Examples 1-9 includes, wherein theprocessing circuitry is further configured to: generate an average SSblock over a subset of the plurality of SS blocks, wherein the subset ofthe SS blocks represent top N synchronization signals with a highestsignal strength within the SS burst set, wherein N is an integer greaterthan 1; and perform measurement on the average SS block to generate thecell beamforming measurement signal.

In Example 11, the subject matter of Examples 1-10 includes, wherein theprocessing circuitry is further configured to: decode higher layersignaling including a normalization value; and normalize the cellbeamforming measurement signal using the normalization value, prior toencoding the RRM measurement report.

In Example 12, the subject matter of Examples 1-11 includes, wherein theprocessing circuitry is further configured to: apply layer 1 (L1)filtering on each of the SS blocks; generate the cell beamformingmeasurement signal based on the filtered SS blocks; and apply layer 3(L3) filtering to the cell beamforming measurement signal to generate afiltered cell beamforming measurement signal for encoding into the RRMmeasurement report based on the signal selection criteria.

In Example 13, the subject matter of Examples 1-12 includes, wherein theprocessing circuitry is further configured to: sort the SS blocks withinthe SS burst set based on signal strength; apply layer 1 (L1) filteringto a top N number of the sorted SS blocks to generate filtered SSblocks, wherein N is an integer greater than 1 and N is configured byhigher layer signaling; and generate the cell beamforming measurementsignal based on the filtered SS blocks.

In Example 14, the subject matter of Examples 1-13 includes, wherein theprocessing circuitry is further configured to: apply layer 1 (L1)filtering to the SS blocks according to a receive time index, togenerate filtered SS blocks; and generate the cell beamformingmeasurement signal based on the filtered SS blocks.

In Example 15, the subject matter of Examples 1-14 includes, wherein theprocessing circuitry is further configured to: store configurationinformation associated with the source serving cell within the memory;and upon detecting a failure of the handover to the neighboring cell,initiate a fallback procedure for initiating a connection to the sourceserving cell based on the stored configuration information.

In Example 16, the subject matter of Examples 1-15 includes, wherein theSS burst set is a radio link monitoring (RLM) burst set, received duringan RLM procedure.

In Example 17, the subject matter of Examples 1-16 includes, transceivercircuitry coupled to the processing circuitry; and, one or more antennascoupled to the transceiver circuitry.

Example 18 is a non-transitory computer-readable storage medium thatstores instructions for execution by one or more processors of a userequipment (UE), the instructions to configure the one or more processorsto cause the UE to: decode a synchronization signal (SS) burst setoriginating from one or more transmission/reception points (TRPs) withina neighboring cell, the SS burst set comprising a plurality of new radiosynchronization signals (NRSSs) received within a serving cell; decode aUE-specific reference signal, the reference signal indicative of datacoverage within the neighboring cell; generate a cell beamformingmeasurement signal associated with the neighboring cell, based on signalmeasurements of the NRSSs within the SS burst set, the cell beamformingmeasurement signal for transmission to the serving cell; decode ahandover command message for initiating a handover to the neighboringcell, the handover command responsive to the cell beamformingmeasurement signal; and determine to initiate a handover procedure fromthe serving cell to the neighboring cell based on the handover commandand the data coverage within the neighboring cell.

In Example 19, the subject matter of Example 18 includes, wherein theUE-specific reference signal is a channel state information referencesignal (CSI-RS).

In Example 20, the subject matter of Examples 18-19 includes, whereinthe one or more processors further cause the UE to: encode a radioresource management (RRM) measurement report message for transmission tothe serving cell, the measurement report message including the cellbeamforming measurement signal.

In Example 21, the subject matter of Examples 18-20 includes, whereinthe one or more processors further cause the UE to: decode a second SSburst set associated with one or more TRPs within the source servingcell; and generate a second cell beamforming measurement signal fortransmission to the source serving cell, based on signal measurements ofNRSSs within the second SS burst set, the handover command messagefurther based on the second cell beamforming measurement signal.

In Example 22, the subject matter of Examples 18-21 includes, whereinthe one or more processors further cause the UE to: generate a summedNRSS using a subset of the plurality of NRSSs associated with a signalstrength above a threshold; and perform measurement on the summed NRSSto generate the cell beamforming measurement signal.

In Example 23, the subject matter of Examples 18-22 includes, whereinthe one or more processors further cause the UE to: generate a summedNRSS using a subset of the plurality of NRSSs, wherein the subset of theNRSSs represent top N synchronization signals with a highest signalstrength within the SS burst set, wherein N is an integer greater than1; and perform measurement on the summed NRSS to generate the cellbeamforming measurement signal.

In Example 24, the subject matter of Examples 18-23 includes, whereinthe one or more processors further cause the UE to: generate an averageNRSS over a subset of the plurality of NRSSs, wherein the subset of theNRSSs represent top N synchronization signals with a highest signalstrength within the SS burst set, wherein N is an integer greater than1; and perform measurement on the average NRSS to generate the cellbeamforming measurement signal.

Example 25 is an apparatus of a Node-B (NB), the apparatus comprising:processing circuitry, configured to: encode a configuration message fortransmission to a user equipment (UE), the configuration messageindicating signal selection criteria for cell measurement reporting;encode a synchronization signal (SS) burst set for transmission within aserving cell of the NB, the SS burst set comprising a plurality of newradio synchronization signals (NRSSs); decode a first cell beamformingmeasurement signal, the first cell beamforming measurement signal basedon the SS burst set transmitted within the serving cell and the signalselection criteria; decode a second cell beamforming measurement signalbased on a second SS burst set associated with a neighboring cell, thesecond cell beamforming measurement signal based on signal measurementsof NRSSs within the second SS burst set; encode a handover commandmessage for initiating a handover to the neighboring cell, the handovercommand based on the first cell beamforming measurement signal and thesecond cell beamforming reference signal; and memory coupled to theprocessing circuitry, the memory configured to store the signalselection criteria.

In Example 26, the subject matter of Example 25 includes, wherein theprocessing circuitry is further configured to: decode a radio resourcemanagement (RRM) measurement report message from the UE, the measurementreport message including the cell beamforming measurement signal,

In Example 27, the subject matter of Examples 25-26 includes, whereinthe SS burst set further comprises a NRSS originating from one or moretransmission/reception points (TRPs) within the serving cell.

In Example 28, the subject matter of Examples 25-27 includes, whereinthe processing circuitry is further configured to: encode higher layersignaling including a signal strength threshold value, the higher layersignaling for transmission to the UE.

In Example 29, the subject matter of Example 28 includes, wherein thefirst cell beamforming measurement signal indicates signal strength of asummed NRSS using a subset of the plurality of NRSSs associated with asignal strength above the threshold value.

In Example 30, the subject matter of Examples 25-29 includes, whereinthe NB is one of a Next Generation Node-B (gNB) or an Evolved Node-B(eNB).

Example 31 is an apparatus of a user equipment (UE), the apparatuscomprising: means for decoding a synchronization signal (SS) burst setoriginating from one or more transmission/reception points (TRPs) withina neighboring cell, the SS burst set comprising a plurality of new radiosynchronization signals (NRSSs) received within a serving cell; meansfor decoding a UE-specific reference signal, the reference signalindicative of data coverage within the neighboring cell; means forgenerating a cell beamforming measurement signal associated with theneighboring cell, based on signal measurements of the NRSSs within theSS burst set, the cell beamforming measurement signal for transmissionto the serving cell; means for decoding a handover command message forinitiating a handover to the neighboring cell, the handover commandresponsive to the cell beamforming measurement signal; and means fordetermining to initiate a handover procedure from the serving cell tothe neighboring cell based on the handover command and the data coveragewithin the neighboring cell.

In Example 32, the subject matter of Example 31 includes, wherein theUE-specific reference signal is a channel state information referencesignal (CSI-RS).

In Example 33, the subject matter of Examples 31-32 includes, means forencoding a radio resource management (RRM) measurement report messagefor transmission to the serving cell, the measurement report messageincluding the cell beamforming measurement signal.

In Example 34, the subject matter of Examples 31-33 includes, means fordecoding a second SS burst set associated with one or more TRPs withinthe source serving cell; and means for generating a second cellbeamforming measurement signal for transmission to the source servingcell, based on signal measurements of NRSSs within the second SS burstset, the handover command message further based on the second cellbeamforming measurement signal.

In Example 35, the subject matter of Examples 31-34 includes, means forgenerating a summed NRSS using a subset of the plurality of NRSSsassociated with a signal strength above a threshold; and means forperforming measurement on the summed NRSS to generate the cellbeamforming measurement signal.

Example 36 is at least one machine-readable medium includinginstructions that, when executed by processing circuitry, cause theprocessing circuitry to perform operations to implement of any ofExamples 1-35.

Example 37 is an apparatus comprising means to implement of any ofExamples 1-35.

Example 38 is a system to implement of any of Examples 1-35.

Example 39 is a method to implement of any of Examples 1-35.

Although an aspect has been described with reference to specific exampleaspects, it will be evident that various modifications and changes maybe made to these aspects without departing from the broader scope of thepresent disclosure. Accordingly, the specification and drawings are tobe regarded in an illustrative rather than a restrictive sense. Theaccompanying drawings that form a part hereof show, by way ofillustration, and not of limitation, specific aspects in which thesubject matter may be practiced. The aspects illustrated are describedin sufficient detail to enable those skilled in the art to practice theteachings disclosed herein. Other aspects may be utilized and derivedtherefrom, such that structural and logical substitutions and changesmay be made without departing from the scope of this disclosure. ThisDetailed Description, therefore, is not to be taken in a limiting sense,and the scope of various aspects is defined only by the appended claims,along with the full range of equivalents to which such claims areentitled.

Such aspects of the inventive subject matter may be referred to herein,individually and/or collectively, merely for convenience and withoutintending to voluntarily limit the scope of this application to anysingle aspect or inventive concept if more than one is in factdisclosed. Thus, although specific aspects have been illustrated anddescribed herein, it should be appreciated that any arrangementcalculated to achieve the same purpose may be substituted for thespecific aspects shown This disclosure is intended to cover any and alladaptations or variations of various aspects. Combinations of the aboveaspects, and other aspects not specifically described herein, will beapparent to those of skill in the art upon reviewing the abovedescription.

The Abstract of the Disclosure is provided to allow the reader toquickly ascertain the nature of the technical disclosure. It issubmitted with the understanding that it will not be used to interpretor limit the scope or meaning of the claims. In addition, in theforegoing Detailed Description, it can be seen that various features aregrouped together in a single aspect for the purpose of streamlining thedisclosure. This method of disclosure is not to be interpreted asreflecting an intention that the claimed aspects require more featuresthan are expressly recited in each claim. Rather, as the followingclaims reflect, inventive subject matter lies in less than all featuresof a single disclosed aspect. Thus the following claims are herebyincorporated into the Detailed Description, with each claim standing onits own as a separate aspect.

1-25. (canceled)
 26. An apparatus of a user equipment (UE), theapparatus comprising: processing circuitry, the processing circuitryconfigured to: decode a configuration message from a source servingcell, the configuration message indicating signal selection criteria forcell measurement reporting; decode a synchronization signal (SS) burstset associated with one or more transmission/reception points (TRPs)within a neighboring cell, the SS burst set comprising a plurality of SSblocks; generate a cell beamforming measurement signal associated withthe neighboring cell, based on signal measurements of the SS blockswithin the SS burst set and the signal selection criteria; encode aradio resource management (RRM) measurement report message fortransmission to the serving cell, the measurement report messageincluding the cell beamforming measurement signal; and decode a handovercommand message for initiating a handover to the neighboring cell, thehandover command responsive to the cell beamforming measurement signal;and memory coupled to the processing circuitry, the memory configured tostore the signal selection criteria.
 27. The apparatus of claim 26,wherein the cell beamforming measurement signal is indicative of signalstrength of the SS blocks originating from the neighboring cell, andwherein each of the SS blocks comprise a new radio synchronizationsignal (NRSS).
 28. The apparatus of claim 26, wherein the processingcircuitry is further configured to: decode a second SS burst setassociated with one or more TRPs within the source serving cell; andgenerate a second cell beamforming measurement signal for transmissionto the source serving cell, based on signal measurements of SS blockswithin the second SS burst set and the signal selection criteria, thehandover command message further based on the second cell beamformingmeasurement signal.
 29. The apparatus of claim 26, wherein theprocessing circuitry is further configured to: perform measurement onone of the plurality of SS blocks associated with a maximum signalstrength among the plurality of SS blocks to generate the cellbeamforming measurement signal.
 30. The apparatus of claim 26, whereinthe processing circuitry is further configured to: generate an averageSS block using the plurality of SS blocks; perform measurement on theaverage SS block to generate the cell beamforming measurement signal;and normalize the average SS block using one of the plurality of SSblocks associated with a maximum signal strength.
 31. The apparatus ofclaim 26, wherein the processing circuitry is further configured to:generate a summed SS block using the plurality of SS blocks; performmeasurement on the summed SS block to generate the cell beamformingmeasurement signal; and normalize the summed. SS block using one of theplurality of SS blocks associated with a maximum signal strength. 32.The apparatus of claim 26, wherein the processing circuitry is furtherconfigured to: generate a summed SS block using a subset of theplurality of SS blocks associated with a signal strength above athreshold; and perform measurement on the summed SS block to generatethe cell beamforming measurement signal.
 33. The apparatus of claim 26,wherein the processing circuitry is further configured to: generate asummed SS block using a subset of the plurality of SS blocks associatedwith a signal strength above a threshold; and perform measurement on thesummed SS block to generate the cell beamforming measurement signal. 34.The apparatus of claim 26, wherein the processing circuitry is furtherconfigured to: generate a summed SS block using a subset of theplurality of SS blocks, wherein the subset of the SS blocks representtop N synchronization signals with a highest signal strength within theSS burst set, wherein N is an integer greater than 1; and performmeasurement on the summed SS block to generate the cell beamformingmeasurement signal.
 35. The apparatus of claim 26, wherein theprocessing circuitry is further configured to: generate an average SSblock over a subset of the plurality of SS blocks, wherein the subset ofthe SS blocks represent top N synchronization signals with a highestsignal strength within the SS burst set, wherein N is an integer greaterthan 1; and perform measurement on the average SS block to generate thecell beamforming measurement signal.
 36. The apparatus of claim 26,wherein the processing circuitry is further configured to: decode higherlayer signaling including a normalization value; and normalize the cellbeamforming measurement signal using the normalization value, prior toencoding the RRM measurement report.
 37. The apparatus of claim 26,wherein the processing circuitry is further configured to: apply layer 1(L1) filtering on each of the SS blocks; generate the cell beamformingmeasurement signal based on the filtered. SS blocks; and apply layer 3(L3) filtering to the cell beamforming measurement signal to generate afiltered cell beamforming measurement signal for encoding into the RRMmeasurement report based on the signal selection criteria.
 38. Theapparatus of claim 26, wherein the processing circuitry is furtherconfigured to: sort the SS blocks within the SS burst set based onsignal strength; apply layer 1 (L1) filtering to a top N number of thesorted SS blocks to generate filtered SS blocks, wherein N is an integergreater than 1 and N is configured by higher layer signaling; andgenerate the cell beamforming measurement signal based on the filteredSS blocks.
 39. A non-transitory computer-readable storage medium thatstores instructions for execution by one or more processors of a userequipment (UE), the instructions to configure the one or more processorsto cause the UE to: decode a synchronization signal (SS) burst setoriginating from one or more transmission/reception points (TRPs) withina neighboring cell, the SS burst set comprising a plurality of new radiosynchronization signals (NRSSs) received within a serving cell; decode aUE-specific reference signal, the reference signal indicative of datacoverage within the neighboring cell; generate a cell beamformingmeasurement signal associated with the neighboring cell, based on signalmeasurements of the NRSSs within the SS burst set, the cell beamformingmeasurement signal for transmission to the serving cell; decode ahandover command message for initiating a handover to the neighboringcell, the handover command responsive to the cell beamformingmeasurement signal; and. determine to initiate a handover procedure fromthe serving cell to the neighboring cell based on the handover commandand the data coverage within the neighboring cell.
 40. Thenon-transitory computer-readable storage medium of claim 39, wherein theUE-specific reference signal is a channel state information referencesignal (CSI-RS).
 41. The non-transitory computer-readable storage mediumof claim 39, wherein the one or more processors further cause the UE to:encode a radio resource management (RRM) measurement report message fortransmission to the serving cell, the measurement report messageincluding the cell beamforming measurement signal.
 42. Thenon-transitory computer-readable storage medium of claim 39, wherein theone or more processors further cause the UE to: decode a second SS burstset associated with one or more TRPs within the source serving cell; andgenerate a second cell beamforming measurement signal for transmissionto the source serving cell, based on signal measurements of NRSSs withinthe second SS burst set, the handover command message further based onthe second cell beamforming measurement signal.
 43. The non-transitorycomputer-readable storage medium of claim 39, wherein the one or moreprocessors further cause the UE to: generate a summed NRSS using asubset of the plurality of NRSSs associated signal strength above athreshold; and perform measurement on the summed NRSS to generate thecell beamforming measurement signal.
 44. The non-transitorycomputer-readable storage medium of claim 39, wherein the one or moreprocessors further cause the UE to: generate a summed NRSS using asubset of the plurality of NRSSs, wherein the subset of the NRSSsrepresent top N synchronization signals with a highest signal strengthwithin the SS burst set, wherein N is an integer greater than 1; andperform measurement on the summed NRSS to generate the cell beamformingmeasurement signal.
 45. The non-transitory computer-readable storagemedium of claim 39, wherein the one or more processors further cause theUE to: generate an average NRSS over a subset of the plurality of NRSSs,wherein the subset of the NRSSs represent top N synchronization signalswith a highest signal strength within the SS burst set, wherein N is aninteger greater than 1; and perform measurement on the average NRSS togenerate the cell beamforming measurement signal.
 46. An apparatus of aNode-B (NB), the apparatus comprising: processing circuitry, configuredto: encode a configuration message for transmission to a user equipment(UE), the configuration message indicating signal selection criteria forcell measurement reporting; encode a synchronization signal (SS) burstset for transmission within a serving cell of the NB, the SS burst setcomprising a plurality of new radio synchronization signals (NRSSs);decode a first cell beamforming measurement signal, the first cellbeamforming measurement signal based on the SS burst set transmittedwithin the serving cell and the signal selection criteria; decode asecond cell beamforming measurement signal based on a second SS burstset associated with a neighboring cell, the second cell beamformingmeasurement signal based on signal measurements of NRSSs within thesecond SS burst set; encode a handover command message for initiating ahandover to the neighboring cell, the handover command based on thefirst cell beamforming measurement signal and the second cellbeamforming reference signal; and memory coupled to the processingcircuitry, the memory configured to store the signal selection criteria.47. The apparatus of claim 46, wherein the processing circuitry isfurther configured to: decode a radio resource management (RRM)measurement report message from the UE, the measurement report messageincluding the cell beamforming measurement signal.
 48. The apparatus ofclaim 46, wherein the SS burst set further comprises a NRSS originatingfrom one or more transmission/reception points (TRPs) within the servingcell.
 49. The apparatus of claim 46, wherein the processing circuitry isfurther configured to: encode higher layer signaling including a signalstrength threshold value, the higher layer signaling for transmission tothe UE.
 50. The apparatus of claim 46, wherein the first cellbeamforming measurement signal indicates signal strength of a summedNRSS using a subset of the plurality of NRSSs associated with a signalstrength above the threshold value.